Qtstalker provides commodity and stock market charting and technical analysis. Data can be imported from online sources (e.g. Yahoo!) or from CSV (comma-separated values) files. Plugins enable creation of other indicators and data loaders. It can access the extensive TA-Lib Technical Analysis Library. Scripting for custom indicators enables combinations of different plots and other indicators and calculations. External scripts can pass data in. The back tester enables indicator performance tests. The scanner looks for charts which meet user-defined criteria.
Admelix is a live CD distribution based on Ubuntu Linux with tools for business administration. Its main objective is to guide managers of small and medium-size businesses towards GNU/Linux and open source software. In addition to the live CD, the project's Web site provides information about open and free tools for business administration.
Stock Volatility Calculator is a spreadsheet that downloads free historical stock data from the Yahoo! database and calculates the historical or realized volatility of the selected stock. The standard deviation of prices is plotted alongside the stock price chart. The user can freely change the stock used by entering the ticker symbol into the appropriate field and performing a fresh download. Users are also able to change the date range used for the stock data, the number of days back to use for the volatility calculation, and the number of volatility days to use.
PricingNexus is a Java-based framework that collects financial data from the Internet, stores it in a database, and makes it available via JMS/DB/RMI, using a well-defined framework. It relies heavily on JMS for transporting messages and communication, and on XML for the data format. It uses several components working separately in a distributed object environment.
QuoteFilter is a companion to Xinvest and Xquote. You can use it to filter your emails messages and process the contents of some messages to retrieve stock quotes from them. The quote information can be stored in the files that Xinvest uses so that you'll automatically use recent information. Xquote serves a similar purpose, but it retrieves stock quote information from Internet servers.
The TREE Data Server captures real-time financial data from one or several data feed services (e.g. IB TWS API), archives data in a historical database, and makes both live and archived data available to client applications. The system can be used in real-time charting, an ATS, a tick feed simulator, or any situation in which multiple clients need real-time access to the tick stream or archived tick data. In addition, the archived tick stream and tick data are available for offline data analysis and backtesting.